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// --------------------------------------------------------------------------
//
// File
// Name: FdGetLine.cpp
// Purpose: Line based file descriptor reading
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
#include "Box.h"
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "FdGetLine.h"
#include "CommonException.h"
#include "MemLeakFindOn.h"
// --------------------------------------------------------------------------
//
// Function
// Name: FdGetLine::FdGetLine(int)
// Purpose: Constructor, taking file descriptor
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
FdGetLine::FdGetLine(int fd)
: mFileHandle(fd)
{
if(mFileHandle < 0) {THROW_EXCEPTION(CommonException, BadArguments)}
//printf("FdGetLine buffer size = %d\n", sizeof(mBuffer));
}
// --------------------------------------------------------------------------
//
// Function
// Name: FdGetLine::~FdGetLine()
// Purpose: Destructor
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
FdGetLine::~FdGetLine()
{
}
// --------------------------------------------------------------------------
//
// Function
// Name: FdGetLine::GetLine(bool)
// Purpose: Returns a file from the file. If Preprocess is true, leading
// and trailing whitespace is removed, and comments (after #)
// are deleted.
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
std::string FdGetLine::GetLine(bool Preprocess)
{
if(mFileHandle == -1) {THROW_EXCEPTION(CommonException, GetLineNoHandle)}
std::string r;
bool result = GetLineInternal(r, Preprocess);
if(!result)
{
// should never fail for FdGetLine
THROW_EXCEPTION(CommonException, Internal);
}
return r;
}
// --------------------------------------------------------------------------
//
// Function
// Name: FdGetLine::ReadMore()
// Purpose: Read more bytes from the handle, possible the
// console, into mBuffer and return the number of
// bytes read, 0 on EOF or -1 on error.
// Created: 2011/04/22
//
// --------------------------------------------------------------------------
int FdGetLine::ReadMore(int Timeout)
{
int bytes;
#ifdef WIN32
if (mFileHandle == _fileno(stdin))
{
bytes = console_read(mBuffer, sizeof(mBuffer));
}
else
{
bytes = ::read(mFileHandle, mBuffer, sizeof(mBuffer));
}
#else // !WIN32
bytes = ::read(mFileHandle, mBuffer, sizeof(mBuffer));
#endif // WIN32
if(bytes == 0)
{
mPendingEOF = true;
}
return bytes;
}
// --------------------------------------------------------------------------
//
// Function
// Name: FdGetLine::DetachFile()
// Purpose: Detaches the file handle, setting the file pointer correctly.
// Probably not good for sockets...
// Created: 2003/07/24
//
// --------------------------------------------------------------------------
void FdGetLine::DetachFile()
{
if(mFileHandle == -1) {THROW_EXCEPTION(CommonException, GetLineNoHandle)}
// Adjust file pointer
int bytesOver = mBufferBegin - mBufferBegin;
ASSERT(bytesOver >= 0);
if(bytesOver > 0)
{
if(::lseek(mFileHandle, 0 - bytesOver, SEEK_CUR) == -1)
{
THROW_EXCEPTION(CommonException, OSFileError)
}
}
// Unset file pointer
mFileHandle = -1;
}
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